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package com.ksyzt.gwt.client.common;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiConstructor;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.HasAutoHorizontalAlignment;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasHorizontalAlignment.HorizontalAlignmentConstant;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
import com.ksyzt.gwt.client.event.MessageEvent;

// TODO: Auto-generated Javadoc

/**
 * The Class CustomTab.
 */
public class CustomTab extends MessageComposite {

    /**
     * The ui binder.
     */
    private static CustomTabUiBinder uiBinder = GWT
            .create(CustomTabUiBinder.class);

    /**
     * The Interface CustomTabUiBinder.
     */
    interface CustomTabUiBinder extends UiBinder {
    }

    /**
     * Instantiates a new custom tab.
     */
    @UiConstructor
    public CustomTab() {
        initWidget(uiBinder.createAndBindUi(this));
        this.setStylePrimaryName("KSYZT");
        setTabAlign(HasHorizontalAlignment.ALIGN_LEFT);
    }

    /* (non-Javadoc)
     * @see com.google.gwt.user.client.ui.UIObject#setStylePrimaryName(java.lang.String)
     */
    @Override
    public void setStylePrimaryName(String name) {
        super.setStylePrimaryName(name);
        this.setStyleName(this.getStylePrimaryName() + "-TAB");
        lbCaption.setStyleName(this.getStylePrimaryName() + "-CAPTION");
        for (int index = 0; index < btns.getWidgetCount(); index++) {
            Widget a1 = (Widget) btns.getWidget(index);
            a1.setStyleName(this.getStylePrimaryName() + "-Button");
        }
    }

    /**
     * Sets the tab align.
     *
     * @param align the new tab align
     */
    public void setTabAlign(HorizontalAlignmentConstant align) {
        if (HasHorizontalAlignment.ALIGN_RIGHT.getTextAlignString().equals(
                align.getTextAlignString())) {
            box.remove(lbCaption);
            box.insert(lbCaption, 0);
            box.setCellHorizontalAlignment(btns,
                    HasHorizontalAlignment.ALIGN_RIGHT);
            box.setCellHorizontalAlignment(lbCaption,
                    HasHorizontalAlignment.ALIGN_LEFT);
        } else {
            box.remove(lbCaption);
            box.insert(lbCaption, 1);
            box.setCellHorizontalAlignment(btns,
                    HasHorizontalAlignment.ALIGN_LEFT);
            box.setCellHorizontalAlignment(lbCaption,
                    HasHorizontalAlignment.ALIGN_RIGHT);
        }
    }

    /**
     * The box.
     */
    @UiField
    HorizontalPanel box;

    /**
     * The btns.
     */
    @UiField
    HorizontalPanel btns;

    /**
     * The lb caption.
     */
    @UiField
    Label lbCaption;

    /**
     * Sets the caption.
     *
     * @param text the new caption
     */
    public void setCaption(String text) {
        lbCaption.setText(text);
    }

    /**
     * Sets the select index.
     *
     * @param index the new select index
     */
    public void setSelectIndex(int index) {
        setSelectIndex(index, false);
    }

    /**
     * Sets the select index.
     *
     * @param data the new select index
     */
    public void setSelectIndex(Object data) {
        setSelectIndex(data, false);
    }

    /**
     * Sets the select index.
     *
     * @param index     the index
     * @param fireEvent the fire event
     */
    public void setSelectIndex(int index, boolean fireEvent) {
        if (index >= 0 && index < btns.getWidgetCount()) {
            Widget a = (Widget) btns.getWidget(index);
            makeAnchorSelected(a, fireEvent);
        }
    }

    /**
     * Sets the select index.
     *
     * @param data      the data
     * @param fireEvent the fire event
     */
    public void setSelectIndex(Object data, boolean fireEvent) {
        for (int i = 0; i < btns.getWidgetCount(); i++) {
            Widget a = (Widget) btns.getWidget(i);
            if (a.getElement().getPropertyObject("v").equals(data)) {
                makeAnchorSelected(a, fireEvent);
                break;
            }
        }
    }

    /**
     * Make anchor selected.
     *
     * @param a         the a
     * @param fireEvent the fire event
     */
    private void makeAnchorSelected(Widget a, boolean fireEvent) {
        if (!a.getStyleName().equals(
                this.getStylePrimaryName() + "-BUTTON-SELECED")) {
            for (int index = 0; index < btns.getWidgetCount(); index++) {
                Widget a1 = (Widget) btns.getWidget(index);
                if (a1.equals(a)) {
                    a1.setStyleName(this.getStylePrimaryName()
                            + "-BUTTON-SELECTED");
                } else {
                    a1.setStyleName(this.getStylePrimaryName() + "-BUTTON");
                }
            }
        }
        if (fireEvent) {
            Object v = a.getElement().getPropertyObject("v");
            MessageEvent ev = new MessageEvent(MessageEvent.ITEMCLICK, v);
            fireEvent(ev);
        }
    }

    /**
     * Adds the item.
     *
     * @param text  the text
     * @param value the value
     */
    public void addItem(String text, Object value) {
        Label a = new Label(text);
        a.addClickHandler(m_click);
        a.setStyleName(this.getStylePrimaryName() + "-BUTTON");
        a.getElement().setPropertyObject("v", value);
        a.setAutoHorizontalAlignment(HasAutoHorizontalAlignment.ALIGN_CENTER);
        btns.add(a);
    }

    /**
     * The m click.
     */
    private ClickHandler m_click = new ClickHandler() {
        public void onClick(ClickEvent event) {
            Widget a = (Widget) event.getSource();
            makeAnchorSelected(a, true);
        }
    };
}